meaning of unimpeachable
1. Not impeachable; not to be called in question; exempt from liability to accusation; free from stain, guilt, or fault; irreproachable; blameless; as, an unimpeachable reputation; unimpeachable testimony.
2. completely acceptable; not open to exception or reproach; "two unexceptionable witnesses"; "a judges ethics should be
">unexceptionable"
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